Sleeve lime kiln empty-kiln baking method

Abstract

The invention relates to a sleeve lime kiln. A sleeve lime kiln empty-kiln baking method comprises the steps: introducing coal gas to temporary burners of the sleeve lime kiln; starting up an exhaust gas draught fan to allow a negative pressure in the kiln to be greater than or equal to -0.05 kPa; igniting the temporary burners in order, inserting ash discharging devices from ash discharging device observation holes, and making the burners upward and fixing; when the temperature in the kiln rises to 50 DEG C, controlling the temperature rising speed at 3 DEG C to 5 DEG C per hour for rising the temperature; when the temperature rises to 280 to 300 DEG C, carrying out heat preservation; 24 hours later after beginning to baking the kiln, opening burner drainage screws and exhaust gas flue drainage holes, after the burners drain, tightening the screws, and timing for every 4 hours to drain once; carrying out continuous heat preservation until drainage ports have no obvious water, that is to said moisture of a refractory material in the kiln is baked to a reasonable control range; cutting off temporary burner coal gas valves; closing the exhaust gas draught fan; and eight hours later, closing a cooling draught fan. The method can effectively remove the moisture in the refractory material and ensure the high-temperature using performance of the refractory material.

Description

technical field [0001] The invention relates to a sleeve lime kiln, in particular to a kiln drying method for a sleeve lime kiln. Background technique [0002] As the saying goes, three points for building a kiln and seven points for baking. The importance of industrial kiln baking is self-evident. After any industrial furnace is built, its refractory lining must be baked after natural drying and curing before it can be put into production. [0003] The purpose of the sleeve lime kiln drying kiln is to remove the free water and crystal water in the lining body after the construction of the refractory material, so as to obtain the high-temperature performance of the refractory material. However, the domestic sleeve kiln baking method has always been the Italian Fukas sleeve kiln drying method, that is, the kiln body is filled with limestone and then baked, which seriously affects the moisture removal effect of the refractory inner lining and even affects High temperature p...

AI Technical Summary

Problems solved by technology

However, the domestic sleeve kiln baking method has always been the Italian Fukas sleeve kiln drying method, that is, the kiln body is filled with limestone and then baked, which seriously affects the moisture removal effect of the refractory inner lining and even affects High temperature service performance of refractories

Facts have proved that without a good oven process, cracks often appear on local refractory materials after being put into production

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